The great advantages of going slow are the "secret" of the experienced diver. One of the best ways to save air is to make all moves in slow motion, including the pace of your swimming. Another way to teach divers to slow down is to encourage use of a flashlight during day dives to help look in holes and cracks.
Of course, giving everyone a camera will stop them in their tracks.
Of course, giving everyone a camera will stop them in their tracks.